Phoenix Technology Tactical Shotgun Forend Glass Filled Nylon Remington 20 ga. Black TFP07. Fits 20 ga. Mossberg 500 590 835. Forend Length 6 in;. Fits 6 1/2 in; and 7 1/4 in; slide tubes/ Does in; not fit on 4 1/2 in; slide tubes found on some models...